de witt



INVENTQR.

lu. Il

Re. 17,834 A l e. www@ fam. l f4 )BY-W ff /i' ATTkNEYs.

C. DE WITT STEEL POLE lll ililll,

Orlglnal Flled Deo EILZQ ocr. 21, 1930.

Reissued Oct. 21, 1930 l UNITED STATE-s n Re. 17,834

lmfrelsxl."U OFFICE.;

CLINTON DE WITT, F BERKELEY, CALIFORNIA, ASSIGNOR TO TAIPER TUBE EPOLE CO.,;OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA` STEEL roLE Original No. 1,743,439, ,datedA January 14, 1930, Seria1 No. 241,312, iiled December 20, 1927. Application i for reissue iled June 17, 1930. Serial No. 461,829.

This invention'relates to tubular steel poles such'as used for electric power'transmission lines, telephone and telegraph poles, etc., and

' especially to' a modified form of the'steel pole 5 shown in my co-pending application entitled Steel polef filed April 2, 1927, Serial No; 180,416. g

The object of the present invention is to generally improve and simplify the construction and operation of poles of the character described; to provide a tubular pole enclosing a plurality` of casings for the purpose of transferring electrical Vwires or cables from overhead tounderground construction or vice versa; to provide a tubular pole enclosing a plurality o'f casings spot Welded or otherwise secured to the inner surface ofthe pole and to each other to reinforce and promote rigidity in the polel structur'cg'to provide a sectional tubular pole within enclosed casings in which the casings and tube sections form integral units; to provide a connection for each pole section which is'telescopic in structure and which Valso permits simultaneous teiescoping of the casings when two pole sections are tele-- scoped and assembled; and further, to provide a tubular pole enclosing casings which are bent outwardlythrough openings in the pole section, either at the upper or lower end thereof to permit the entering or taking out of electrical wires or cables, the upper end outlets being arranged to direct the wires or cable to various cross arm positions andthe lower ends to direct the cables into underground conduits, etc.V l Theinvention is' shown way of illustration'in the accompanying drawingsin which l is a side elevation of a" pole, lsaid side elevation being partly broken away,

Fig. 2 is lan enlarged vertical central section ofv that portion of the pole where the casings are bent outwardlyjtoform outlets for the `wires or cables extending through theI pole,

Figs. 3 and 4 are enlarged vertical longitudinal sections of theadjacent ends oftwo pole sections, said views showing the telescop-V Fig. 5 is a cross section taken on the'line Fig. 6 is a plan l view of the upper end of the 'it yis uniform inv diameter throughoutits length. The remaining sections'indicated at 2 andv 3 are alsoftubula'r but they taper from end to kend so as'to 'provide-a, series of telescoping sections.; vlila-'ch tapering section is constructed of Asteel or like materialA and thev metal employed in: each section is preferably decreased in thickness from'the bottom" to the top, i. e., the metal employed in thebase section is the heaviest, the metal in the section indicated at l2v is slightly lighter,y etc.V The particular. method of constructing each-individual tubular section is of nofmaterial importance. Suiiice it` to say that each section may be made up of two half-sectionsqwhich may*v bev stamped or ,rolledl andV which are lapped. buttwelded or otherwise joined.

` The description so fa'rzsubmitted describes a pole substantially identi- Calto that illustrated in my c'o-pending application already referred to., The novel featuresto` be considered in connection with the present application areas follows Y n I` First--A tubular pole ysuch as described enclosing a plurality of pipes or'v casings which are integral `'therewith byv welding or otherwise `securing thecasi'ngs or pipes. interiorof the'tubular poile. g Secondly-A tubular pole of this character in which one end of the interior casings is bent outwardly through openings in the pole to form outlets or inlets for wires, cables, etc.l

Third-Atubular pole consisting of'sections which are adapted to telescopewith relation to each other and each section enclosing a plurality of pipes or casings which are formed integral therewith and Which are provided With telescoping connections so that a plurality of continuous interior conduits may l be formed.

x' shell, interiorly` `of vwhich is mounted .apli rality of pipes or casings, such `as indicated at 6. These casings `are spot Welded or other? Wise` secured With relation to eachother and the eizt'eri'or shell, indicated aty 7.1l 'integral structure is thus ormedthicli, first of all, provides a .plurality ofinterior con-y duits forthe reception of Wires, cables, etc. and secondlywhich serves as a reinforcement to increase the rigidity and strength ofthe pole n,

Interiorcasings r,6 i may beof tany suitable numberv and they are of substantially the same length .as the tubular .pole section in which they `'are :mountedi :fr It is,\lhowever, desirable to r'form `series of unobstructed 'continuous conduits when the pole rsections arey assembled,`

as shofvvn in EigQl.' and a telescopic` connection is` provided`r in Y connection with the "pipes or casingsf; This is lbesty illustratedin Figs.

3 and `0n theupper ends ofthe casings Gare Weldledhfor otherwise secured sleeves,`

bellggshaped'iaen .cuter emisand are Weiued 50' two pole sections fare assembled. Figff? illustrates the telescoping ,c onnectionbetvveen "two n pole sections. Angle iron v"flanges are .Welded to eachrpole'sectiomfas indicated atpll-fand` 1 `12,; Thesearefperforatedor slotted tin-receive i 4 they'rn'ay alsobefweld'edeor.otherwise secured toy the upper ends of thecasings'. The lower ends of the casings project doeyond the end sections'a're assembled@ Thefnpper end yof thepole sections, shovvnatfQ, has a-diameter whijchfpermitsit 'to "telescope with relation to tlielo'werend ol. the ipole section indicated at 3, i. e., f a telescopic connection is .provided between`- each pole, section and', a telescopic connectionis also'formed between the upper connections `are lformed? simultaneously when liolts I3 andA `nuts aregappliedfto `each side of the tangle ironkfiianges,l as illustrated,'so that each bolt mayl take any loadiimposed on "the lpole either intensionfor--jin cofmpressi'on.nl This .fea-tune will, hovuevennot" `,be elaborated l @spendingapplication.i .y f. n

Fig. c unam-.tesine mancati-'f tending the upper;y ends'fof "the casings 6 Where it" is yare thenwelded at the points indicated at 16 andarigid connection is formed which tends to reinforce the pole structurel and it is of Ifurther importance as it excludes rain, dust, moisture', etc- `the upper en'd "of thlel upper;-

`mostwpolefsection being also capped, as indicated at 17, to exclude extraneous matter such as vreferred to.

A pole of this characterhas been found to be exceedingly `rigid and substantially "ebnstructefd; These 4poles are readily manufactured and they are easily assembled and erectedin the field. The conduits due to the telescoping connections provided are unobstructed throughout their length, thus makingit comparatively easy ltoenter and place the'ables in position.'l Each poleV section` may be galvanized, both eXteriorly and` interiorly or it may be treatedwith asphalt coatings or the like, thus materially increasing the life of the pole.r The thickness of sheet metalvemployed rin the pole sections `Zand 8 mayin this instance be redu'cedto a consid` erable extent in view voff the internal. rein.- forcernent obtained by the ycasing sections 6., i.'y e., the metalin the `pole sections may be lreduced in gauge orthickness when compared with the structure in my (3o-pending application. u f

y While vrcertain features of the presentv inf.` k'ventio'n arev more or less',specificallyl desc'ribed, I `Wish it understood thatk various changes may be resorted to Within ythe' scope of the .appended claims.` "Similarly, that the materialsand finishes Aol' the several par-ts employedf'may be `such ras thel manufacturer may decide.'` or varying conditions or uses ma demand. i

` avingthus described myfinvention, What y I claim "and desire to secure by Letters Patelitist v a pole ofthe character described ya y 'tubular section, a plurality o'f casingsf'withand lower endsiofr eachkcasing section.` 'It should, l furthermore.. be noted that; telescopic f in thesection rand secured v'therein t.o,form, a rigid str'ucfutrefsai'd casings being bentfat one end and projecting y through `'openingsr korinedin the tube section, 'and .a vvelded leon"-` nection y,betWeen the tube 4'section and: Ieach easing "te `suivent entrance ef' "estrumene` matter.

si'sting of a plurality of tubularjsections'; a

plurality rof casings Within each 'section and "rigidly secured with :relation rto each"v other and 'thesurrounding tube, the ycasingsfp'rd jecting beyond one endofeach tube section; l

a sleeve *securedto 'the opposite end of each I casing, .said lsleeve vbeing" flared 2to telescopi;

cally receive -the "leasing'ends fof van" yadj acent tube sectien; and means; adjacent the fende 'er the 'tube fseetiis @aad-i steun-wa l exterior thereof for securin the tube sections with relation to each ot er.

3. A pole of the character described consisting of a plurality of tubular sections; a` 5 plurality of casings within each section and rigidly secured with relation to each other and the surrounding tube, the casings projecting beyond one end of each tube section;

a sleeve secured to the opposite end of each (lo casing, said sleeve being flared to telescopically receive the projecting casing ends of an adjacent tube section; a telescopic connection between each tube section; exterior ianges on each telescopic section; and bolts n extending through the flanges and adapted to secure the telescoping tube sections with relation to each other.

4. A pole of the character described consisting of a plurality of tubular sections, a 20 plurality of casin'gs within each section and rigidly secured with relation to each other and the surrounding tube sections; said casings projectin beyond one end of each tube section; an en arged portion on the opposite 2 5 end of each casing, said enlarged portion being flared to telescopically receive the projecting casing ends of an adjacent tube section; a telescopic connection between each tube section; and means on the exterior of m, each tube section for rigidly connecting the telescoping ends-of the tubes. 5. A post or pole adapted to be positioned vertically for supporting and containing Y electric conductors, comprising a tubular shell, a plurality of metallic conduits disposed longitudinally of the shell, and extending from points near one end of the pole to points intermediate the ends thereof, said y conduits being adapted to contain electric v conductors and said shell being provided with openings intermediate its ends, angular end portions on' said conduits, extending through saidv openings in the shell, and means to secure the projecting end portions 4f, of the conduit to the Walls of the shell and Y, form a connection therebetween sufficiently tight to exclude extraneous matter.

y 6. An electric lighting pole comprising a tubular shell and a plurality of metallic con- 51, duits disposed longitudinally within the shell, and extending from points near one end thereof tol onts intermediate the ends thereof, the en of the conduits extending through the shell and so connected to the 55 shell that the latter and said conduits form a substantially unitary rigid structure and exclude water where the conduits pass i through the shell, said conduits adapted to contain electrical cablesV and segregate one m circuit from anotherv and distribute said cables to their proper cross-arm positions.

Y CLINTON DE wirr. 

